Home / 99,070.76-136,717.62-56,630.20

Finding the Fourth Proportional to 99,070.76, 136,717.62 and 56,630.20

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Solution

The fourth proportional to 99,070.76, 136,717.62 and 56,630.20 is: 78,149.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,070.76 : 136,717.62 = 56,630.20 : x
  2. Step 2: Convert to fraction form
    99,070.76/136,717.62 = 56,630.20/x
  3. Step 3: Cross multiply
    99,070.76x = 136,717.62 × 56,630.20
  4. Step 4: Simplify right side
    99,070.76x = 7,742,346,164.12
  5. Step 5: Solve for x
    x = 7,742,346,164.12/99,070.76
  6. Step 6: Final answer
    x = 78,149.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.