Home / 155,897.60-215,133.45-98,567.78

Finding the Fourth Proportional to 155,897.60, 215,133.45 and 98,567.78

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Solution

The fourth proportional to 155,897.60, 215,133.45 and 98,567.78 is: 136,020.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,897.60 : 215,133.45 = 98,567.78 : x
  2. Step 2: Convert to fraction form
    155,897.60/215,133.45 = 98,567.78/x
  3. Step 3: Cross multiply
    155,897.60x = 215,133.45 × 98,567.78
  4. Step 4: Simplify right side
    155,897.60x = 21,205,226,570.24
  5. Step 5: Solve for x
    x = 21,205,226,570.24/155,897.60
  6. Step 6: Final answer
    x = 136,020.22

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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.