Home / 103,306,342.74-142,572,822.80-77,155,459.72

Finding the Fourth Proportional to 103,306,342.74, 142,572,822.80 and 77,155,459.72

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Solution

The fourth proportional to 103,306,342.74, 142,572,822.80 and 77,155,459.72 is: 106,482,055.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,306,342.74 : 142,572,822.80 = 77,155,459.72 : x
  2. Step 2: Convert to fraction form
    103,306,342.74/142,572,822.80 = 77,155,459.72/x
  3. Step 3: Cross multiply
    103,306,342.74x = 142,572,822.80 × 77,155,459.72
  4. Step 4: Simplify right side
    103,306,342.74x = 11,000,271,686,712,098
  5. Step 5: Solve for x
    x = 11,000,271,686,712,098/103,306,342.74
  6. Step 6: Final answer
    x = 106,482,055.17

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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.