Home / 145,761,988.86-218,643,397.07-42,139,628.87

Finding the Fourth Proportional to 145,761,988.86, 218,643,397.07 and 42,139,628.87

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Solution

The fourth proportional to 145,761,988.86, 218,643,397.07 and 42,139,628.87 is: 63,209,562.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,761,988.86 : 218,643,397.07 = 42,139,628.87 : x
  2. Step 2: Convert to fraction form
    145,761,988.86/218,643,397.07 = 42,139,628.87/x
  3. Step 3: Cross multiply
    145,761,988.86x = 218,643,397.07 × 42,139,628.87
  4. Step 4: Simplify right side
    145,761,988.86x = 9,213,551,606,101,930
  5. Step 5: Solve for x
    x = 9,213,551,606,101,930/145,761,988.86
  6. Step 6: Final answer
    x = 63,209,562.92

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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.