Home / 128,249,656.80-192,500,456.40-63,626,431.20

Finding the Fourth Proportional to 128,249,656.80, 192,500,456.40 and 63,626,431.20

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Solution

The fourth proportional to 128,249,656.80, 192,500,456.40 and 63,626,431.20 is: 95,502,142.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,249,656.80 : 192,500,456.40 = 63,626,431.20 : x
  2. Step 2: Convert to fraction form
    128,249,656.80/192,500,456.40 = 63,626,431.20/x
  3. Step 3: Cross multiply
    128,249,656.80x = 192,500,456.40 × 63,626,431.20
  4. Step 4: Simplify right side
    128,249,656.80x = 12,248,117,045,103,200
  5. Step 5: Solve for x
    x = 12,248,117,045,103,200/128,249,656.80
  6. Step 6: Final answer
    x = 95,502,142.86

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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.