Home / 145,514,112.30-218,271,168.45-72,742,124.70

Finding the Fourth Proportional to 145,514,112.30, 218,271,168.45 and 72,742,124.70

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Solution

The fourth proportional to 145,514,112.30, 218,271,168.45 and 72,742,124.70 is: 109,113,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,514,112.30 : 218,271,168.45 = 72,742,124.70 : x
  2. Step 2: Convert to fraction form
    145,514,112.30/218,271,168.45 = 72,742,124.70/x
  3. Step 3: Cross multiply
    145,514,112.30x = 218,271,168.45 × 72,742,124.70
  4. Step 4: Simplify right side
    145,514,112.30x = 15,877,508,553,804,606
  5. Step 5: Solve for x
    x = 15,877,508,553,804,606/145,514,112.30
  6. Step 6: Final answer
    x = 109,113,187.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.